CN201093108Y

CN201093108Y - Explosion-resistant tyre valve needle for general-purpose type motor vehicle

Info

Publication number: CN201093108Y
Application number: CNU2007200806460U
Authority: CN
Inventors: 梁伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-15
Filing date: 2007-08-15
Publication date: 2008-07-30
Anticipated expiration: 2017-08-15

Abstract

The utility model relates to the field of motor vehicle accessories, in particular to a general flat-tire-preventive valve needle for motor vehicles. The utility model consists of a core pin, a propelling spiral body, a core pin sleeve, an anti-exhaust sealing ring, a vent-pipe, a combined sealing ring, an anti-exhaust spring, an anti-inflation sealing ring, an annular rubber ring bowl, an anti-inflation spring and a gas nipple cap with a hole. The core pin is arranged in the core pin sleeve and the core pin sleeve is arranged in the vent-pipe. The anti-exhaust sealing ring is stuck on the lower surface of the upper port edge of the core pin sleeve. The anti-exhaust spring is sleeved on the core pin sleeve and the anti-inflation spring is sleeved on the core pin. An annular conical surface is arranged on the bottom of the core pin sleeve and a ring of snap rings is arranged on the lower part of the core pin sleeve. A ring of annular conical surfaces is arranged at the upper port of the vent-pipe. When the utility model is used, a user first unscrews the prior valve needle from the valve cylinder and then screws in the valve needle. The general flat-tire-preventive valve needle for motor vehicles has the functions of air inflation and automatic deflation as well as decompression simultaneously, facilitates to be used for the existing tire conveniently by amateur technicians and has strong universality.

Description

General-purpose type Motor Vehicle tire explosion proof valve pin

Technical field

The utility model relates to the motor vehicle fittings field, particularly relates to a kind of general-purpose type Motor Vehicle tire explosion proof valve pin.

Background technique

Motor Vehicle becomes outstanding traffic problems because of high temperature, blowing out of overload initiation.The at present existing technology that solves this problem by the automatic vent decompression is divided into following three classes substantially:

1. increase an outlet valve on wheel newly, this scheme only is adapted at adopting when tire plant is made new tyre, is difficult to be applicable to the tire in the existing use.

2. after inflation finishes, the drain tap of on the original valve of tire, screwing on, automatic vent decompression.Though this scheme can be used on existing tire, when inflating, drain tap must be backed out, and after inflation finishes, again this valve is backed out, and has increased inconvenience to the car owner at every turn.

3. reach original air faucet of tire of generation with a kind of valve that can serve as inflation and outlet valve simultaneously.For example the patent No. is 200420052005.0 " tire seizing type explosion-proof air valve ".This scheme can not be used for the valve on the existing tire.

In sum, also do not have an example to be advantageously used in existing valve at present, possess the general-purpose type Motor Vehicle tire explosion proof valve pin of sealing air, inflation and automatic vent decompression simultaneously for non-specialized-technical personnel.

The model utility content

The utility model is for solving the deficiencies in the prior art, provides a kind of and conveniently is used in existing tire for non-specialized-technical personnel, possesses the general-purpose type Motor Vehicle tire explosion proof valve pin of inflation and automatic vent pressure-reducing function simultaneously.

The scheme that solves the utility model technical problem is:

General-purpose type Motor Vehicle tire explosion proof valve pin comprises: core bar, propelling heliconid, core bar cover, anti-exhausting seal ring, outlet pipe, combination seal circle, anti-exhaust spring, anti-gas-flow closure circle, ring apron bowl, anti-air spring and gas nozzle cap with holes.

Core bar is in the core bar cover, the core bar cover is in the outlet pipe, the outlet pipe upper end is connected with the buckle form with advancing the heliconid lower end, anti-exhausting seal ring sticks at the lower surface that core bar puts the port edge, the combination seal snare is in the annular groove at the middle part of outlet pipe, anti-exhaust spring is placed in core bar and puts, between the snap ring of outlet pipe bottom and core bar cover bottom, anti-gas-flow closure circle sticks in the ring apron bowl at core bar middle part, anti-air spring is placed on the core bar, between at the bottom of ring apron bowl bottom and the former valve mouth tube, gas nozzle cap with holes and former valve mouth nozzle portion are to be threaded.

Wherein, the circular flat of a diameter greater than the core bar diameter arranged at the core bar top, and the core bar lower end is stretched in the hole of former valve mouth tube bottom and in the hole of rubbery outer cover bottom.

Advance the heliconid outside that screw thread with the threads engaged of former valve mouth nozzle portion inboard is arranged, the mouth edge that its lower end has a circle to tilt to the inside, its lower inside has an annular horizontal bench.

There is a circular cone core bar cover bottom, and the snap ring of a circle outer diameter greater than spring diameter, the distance L=L of its upper surface and outlet pipe lower surface are arranged at core bar cover bottom ₀-F/K, wherein, L ₀Be the length of anti-exhaust spring when not stressed, F is the downward thrust of anti-exhaust spring to snap ring and core bar cover, and K is the coefficient of stiffiness of anti-exhaust spring.

There is a circle circular cone at outlet pipe place suitable for reading, the annular levelling bench of one circle is arranged at this circular cone bottom, this levelling bench is between the annular horizontal bench of mouth edge that advances the heliconid lower end to tilt to the inside and propelling heliconid lower inside, and there is an annular groove at the outlet pipe middle part.

Anti-exhaust spring is to the downward thrust F=PS+F ' of core bar cover, wherein, P is that the maximum safety pressure in the tire is strong, S is the horizontal projected area of the annulus between core bar cover and the outlet pipe, F ' upwards pressure to ring apron bowl and core bar for anti-air spring, and also the pressure that produces in plunger with existing Motor Vehicle valve medi-spring is identical.

One hole is arranged at gas nozzle cap with holes top.

During use, the user only needs earlier the plunger in the former valve mouth tube to be screwed out, and this plunger is screwed in former valve mouth tube again, gas nozzle cap with holes is threaded onto former valve mouth nozzle portion again and gets final product.

Adopt such scheme, can receive following effect:

1, the utility model can in time reduce pressure in the tire when causing that because of extraneous factor such as be heated the tire internal air pressure raises, and belongs to " in advance initiatively " type security insurance, stops the accident of blowing out that raises and cause because of the tire internal air pressure effectively.

2, the utility model collection inflation, automatic deflation, three kinds of functions of sealing air are one, can be spun on easily on the existing air faucet of tire for non-specialized-technical personnel and use highly versatile.

3, because the spring in the utility model is sealed in valve inside, under the situation of on-inflatable and exhaust, insulate with ambient air, stopped spring by the possibility of extraneous humid air corrosion, improved the working life of valve, also avoided reducing because of the spring corrosion causes the sensitivity of exhaust.

4, because the utility model has effectively utilized the mouth tube of existing valve, reduced the renewal cost, when having avoided using new valve, former valve is dropped the waste that causes, has effectively saved resource.

5, because press rods of the present utility model lower end is stretched in the hole of former valve mouth tube bottom and in the hole of rubbery outer cover bottom, play good leading role, guaranteed that so effectively the moving direction of press rods in former valve inflator is parallel with former valve inflator center line, it is good in neutrality that plunger is had, compare with traditional valve, more guaranteed the tightness of valve.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Among the figure, 1. core bar, 2. advance heliconid, 3. core bar cover, 4. anti-exhausting seal ring, 5. outlet pipe, 6. combination seal circle, 7. anti-exhaust spring, 8. anti-gas-flow closure circle, 9. ring apron bowl, 10. anti-air spring, 11. gas nozzle caps with holes, 12. former valve mouth tubes, 13. rubbery outer covers.

Embodiment

The utility model will be further described below in conjunction with drawings and Examples.

General-purpose type Motor Vehicle tire explosion proof valve pin comprises: core bar 1, propelling heliconid 2, core bar cover 3, anti-exhausting seal ring 4, outlet pipe 5, combination seal circle 6, anti-exhaust spring 7, anti-gas-flow closure circle 8, ring apron bowl 9, anti-air spring 10 and gas nozzle cap with holes 11.

Core bar 1 is in the core bar cover 3, core bar cover 3 is in the outlet pipe 5, outlet pipe 5 upper ends are connected with the buckle form with advancing heliconid 2 lower ends, anti-exhausting seal ring 4 sticks at the lower surface that core bar overlaps 3 upper end-hole edges, combination seal circle 6 is placed in the annular groove at middle part of outlet pipe 5, anti-exhaust spring 7 is placed on the core bar cover 3, overlap between the snap ring of 3 bottoms in outlet pipe 5 bottoms and core bar, anti-gas-flow closure circle 8 sticks in the ring apron bowl 9 at core bar 1 middle part, anti-air spring 10 is placed on the core bar 1, at ring apron bowl 9 bottoms and former valve mouth tube, gas nozzle cap 11 with holes and former valve mouth tube 12 oral areas are to be threaded at 12 the end.

Wherein, the circular flat of a diameter greater than core bar 1 diameter arranged at core bar 1 top, and core bar 1 lower end is stretched in the hole of former valve mouth tube 12 bottoms and in the hole of rubbery outer cover 13 bottoms.

Advance heliconid 2 outsides that screw thread with the threads engaged of former valve mouth tube 12 oral area inboards is arranged, the mouth edge that its lower end has a circle to tilt to the inside, its lower inside has an annular horizontal bench.

Core bar overlaps 3 bottoms a circular cone, and core bar overlaps 3 bottoms the snap ring of a circle outer diameter greater than spring diameter, the distance L=L of its upper surface and outlet pipe 5 lower surfaces ₀-F/K, wherein, L ₀Be the length of anti-exhaust spring 7 when not stressed, F is the downward thrust of 7 pairs of snap rings of anti-exhaust spring and core bar cover 3, and K is the coefficient of stiffiness of anti-exhaust spring 7.

There is a circle circular cone at outlet pipe 5 places suitable for reading, the annular levelling bench of one circle is arranged at this circular cone bottom, this levelling bench is between the annular horizontal bench of mouth edge that advances heliconid 2 lower ends to tilt to the inside and propelling heliconid 2 lower inside, and there is an annular groove at outlet pipe 5 middle parts.

The downward thrust F=PS+F ' of 7 pairs of core bar covers 3 of anti-exhaust spring, wherein, P is that the maximum safety pressure in the tire is strong, S is the horizontal projected area of the annulus between core bar cover 3 and the outlet pipe 5, F ' upwards pressure for 10 pairs of ring apron bowls 9 of anti-air spring and core bar 1, and also the pressure that produces in plunger with existing Motor Vehicle valve medi-spring is identical.

One hole is arranged at gas nozzle cap with holes 11 tops.

During installation, the user only needs earlier the plunger in the former valve mouth tube 12 to be screwed out, and this plunger is screwed in former valve mouth tube 12 again, gas nozzle cap 11 with holes is threaded onto former valve mouth tube 12 oral areas again and gets final product.

When the tire internal air pressure is elevated to maximum safety pressure when strong, anti-exhausting seal ring 4 and core bar overlap 3 comforter batt inner high voltage air jack-up, and air is from the slit discharge between outlet pipe 5 and the core bar cover 3 in the tire.When air is got back to normal barometric pressure in the tire, anti-exhaust spring 7 will resist exhausting seal ring 4 and core bar cover 3 to push away downwards, and outlet pipe 5 is closed.

When giving Tyre inflating, identical with the method for giving traditional valve inflation, with the push rod roof pressure core bar 1 of the air outlet of air compressor, core bar 1 and anti-gas-flow closure circle 8 move downward, and pressurized air charges into tire from core bar 1 and the slit that core bar overlaps between 3.After inflation stopped, anti-air spring 10 was core bar 1 and anti-gas-flow closure circle 8 top upwards, and it is 3 sealed that core bar overlaps, and air is sealed in the tire.

Claims

1. general-purpose type Motor Vehicle tire explosion proof valve pin, it is characterized in that: it comprises core bar (1), advance heliconid (2), core bar cover (3), anti-exhausting seal ring (4), outlet pipe (5), combination seal circle (6), anti-exhaust spring (7), anti-gas-flow closure circle (8), ring apron bowl (9), anti-air spring (10) and gas nozzle cap with holes (11), wherein, core bar (1) is in the core bar cover (3), core bar cover (3) is in the outlet pipe (5), outlet pipe (5) upper end is connected with the buckle form with advancing heliconid (2) lower end, anti-exhausting seal ring (4) sticks at the lower surface on core bar cover (3) upper end-hole edge, combination seal circle (6) is placed in the annular groove at middle part of outlet pipe (5), anti-exhaust spring (7) is placed on the core bar cover (3), be positioned between the snap ring of outlet pipe (5) bottom and core bar cover (3) bottom, anti-gas-flow closure circle (8) sticks in the ring apron bowl (9) at core bar (1) middle part, anti-air spring (10) is placed on the core bar (1), be positioned at ring apron bowl (9) bottom and former valve mouth tube (12), gas nozzle cap with holes (11) and former valve mouth tube (12) oral area are to be threaded at the end.

2. general-purpose type Motor Vehicle tire explosion proof valve pin according to claim 1, it is characterized in that: the circular flat of a diameter greater than core bar (1) diameter arranged at core bar (1) top, core bar (1) lower end is stretched in the hole of former valve mouth tube (12) bottom and in the hole of rubbery outer cover (13) bottom, advance heliconid (2) outside that screw thread with the threads engaged of former valve mouth tube (12) oral area inboard is arranged, the mouth edge that its lower end has a circle to tilt to the inside, its lower inside has an annular horizontal bench, there is a circular cone core bar cover (3) bottom, the snap ring of one circle outer diameter greater than spring diameter arranged at core bar cover (3) bottom, there is a circle circular cone at outlet pipe (5) place suitable for reading, the annular levelling bench of one circle is arranged at this circular cone bottom, this levelling bench be positioned at advance mouth that heliconid (2) lower end tilts to the inside along and advance between the annular horizontal bench of heliconid (2) lower inside, there is an annular groove at outlet pipe (5) middle part, and a hole is arranged at gas nozzle cap with holes (11) top.